A Methodology for Incorporating Climate Change Adaptation in Infrastructure Planning and Design: Sanitation
This guide gives best practices for incorporating climate adaption in the planning and engineering design of sanitation systems. It is part of a set of tools to help partners boost the climate resiliency of key infrastructure.
All transportation infrastructure is sensitive to weather and climate change. It can cause significant damage, with high cost implications, and should be incorporated early into investment decisions.
The guide gives an overview of potential climate impacts on sanitation systems and adaptation options, and guidance for using a risk assessment methodology to determine appropriate design measures. Broader elements such as service delivery and management of supply and demand are also discussed since they are closely associated with the optimum performance of these systems.
It stresses the importance when designing or rehabilitating infrastructure to plan not just for the current climate, but for the climate scenario projected for the entire design life of the asset.
The guide uses tables to explain major climate impacts and risks for sanitation systems and adaptation measures to consider. As an example, climate change is causing drought in some countries. Water restrictions reduce wastewater flows, leading to more blockages and unhygienic conditions in combined sewers.
A climate change resilient infrastructure design case study is also provided.
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